docs: def copy(self, mutable=False):
          """Return a copy of this GeoRaster with no modifications.
  
          Can be use to create a Mutable copy of the GeoRaster"""
  
          if self.not_loaded():
              _cls = self.__class__
              if mutable:
                  _cls = MutableGeoRaster
              return _cls.open(self._filename)
  
          return self.copy_with(mutable=mutable)